We just adopted a 3 year old male yesterday around 4pm. ( We got him to keep our 3 year old female company since our other male died.) Since we got him we keep him seperated from the other cat and only bring them together under watchful eye. Since we have had him he seems ok, considering the new environment, but he has not used the litter box at all. I have checked the entire room and there is nothing in the carpet as well. Is this normal and should I be concerned. I bought him a brand new litter box, but still no luck.